SpringBoot進階教程(六十一)intellij idea project下建多個module搭建架構(下)

2019 年 10 月 3 日
筆記

在上一篇文章《SpringBoot進階教程(六十)intellij idea project下建多個module(上)》中，我們已經介紹了在intellij idea中創建project之後再分化多個module，今天再大致介紹介紹各個module之間詳細工作的細分。如果是不考慮細分多個module的話，可以看看這篇文章《SpringBoot入門教程(一)詳解intellij idea搭建SpringBoot》。

v設計資料庫

CREATE TABLE `useraccount` (      `id` int(10) unsigned NOT NULL AUTO_INCREMENT,      `username` varchar(255) NOT NULL,      `age` int(10) NOT NULL,      `phone` bigint NOT NULL,      `email` varchar(255) NOT NULL,      `account` varchar(100) NOT NULL UNIQUE,      `pwd` varchar(255) NOT NULL,      PRIMARY KEY (`id`)  )ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;  insert into `useraccount` values(1,'趙(dev)',23,158,'[email protected]','test001','test001');  insert into `useraccount` values(2,'錢(dev)',27,136,'[email protected]','test002','test002');  insert into `useraccount` values(3,'孫(dev)',31,159,'[email protected]','test003','test003');  insert into `useraccount` values(4,'李(dev)',35,130,'[email protected]','test004','test004');  select * from `useraccount`;

v引入mybatis

1.0 添加mybatis插件

在learn-persist的pom.xml中添加mybatis插件。

<build>          <plugins>              <plugin>                  <groupId>org.mybatis.generator</groupId>                  <artifactId>mybatis-generator-maven-plugin</artifactId>                  <version>${mybatis-generator.version}</version>                  <dependencies>                      <dependency>                          <groupId> mysql</groupId>                          <artifactId> mysql-connector-java</artifactId>                          <version>${mysql.version}</version>                      </dependency>                      <dependency>                          <groupId>org.mybatis.generator</groupId>                          <artifactId>mybatis-generator-core</artifactId>                          <version>${mybatis-generator.version}</version>                      </dependency>                  </dependencies>                  <configuration>                      <!-- 自動生成的配置 -->                      <configurationFile>src/main/resources/mybatis-config/mybatis-generator.xml</configurationFile>                      <!--允許移動生成的文件 -->                      <verbose>true</verbose>                      <!-- 是否覆蓋 -->                      <overwrite>false</overwrite>                  </configuration>              </plugin>          </plugins>      </build>

如上圖，在learn-persist的resources下分別創建mapper和mybatis-config文件目錄，並添加jdbc.properties和mybatis-generator.xml文件。

1.1 jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver  jdbc.url=jdbc:mysql://localhost:3306/mytest?useSSL=false  jdbc.username=toutou  jdbc.password=demo123456

1.2 mybatis-generator.xml

<?xml version="1.0" encoding="UTF-8"?>  <!DOCTYPE generatorConfiguration          PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"          "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">  <generatorConfiguration>      <properties resource="mybatis-config/jdbc.properties"/>      <context id="DB2Tables"    targetRuntime="MyBatis3">          <commentGenerator>              <property name="suppressDate" value="true"/>              <property name="suppressAllComments" value="true"/>          </commentGenerator>          <!--資料庫鏈接地址帳號密碼-->          <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}">          </jdbcConnection>          <javaTypeResolver>              <property name="forceBigDecimals" value="false"/>          </javaTypeResolver>          <javaModelGenerator targetPackage="learn.model.po"                              targetProject="../learn-model/src/main/java/">              <property name="enableSubPackages" value="false" />              <property name="trimStrings" value="true" />          </javaModelGenerator>            <sqlMapGenerator targetPackage="mapper"                           targetProject="../learn-persist/src/main/resources">              <property name="enableSubPackages" value="false" />          </sqlMapGenerator>            <javaClientGenerator targetPackage="learn.persist"                               targetProject="../learn-persist/src/main/java/"                               type="XMLMAPPER">              <property name="enableSubPackages" value="false" />          </javaClientGenerator>          <!--生成對應表及類名-->          <table tableName="useraccount" domainObjectName="UserAccount" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>      </context>  </generatorConfiguration>

mybatis-generator.xml更多介紹可以看這裡。

1.3 版本號統一配置

為了方便後續管理，將所有引入插件的版本號統一放在project(hellolearn)的pom.xml中統一控制，各子module(如learn-persist)的pom.xml中直接用 ${} 的方法使用。

例如：在hellolearn的pom.xml 屬性中添加 < mybatis-generator.version>1.3.6< /mybatis-generator.version> ，在learn-persist的pom.xml中直接 < version>${mybatis-generator.version}< /version> 使用即可。

注意上面的”例如”中程式碼標籤部分有空格是為了轉義的，防止瀏覽器將”mybatis-generator.version”和”version”識別為html標籤。

1.4 Maven Project 插件

如上圖，在idea右側的maven project中就可以了對應的找到mybatis-generator的插件，如果找不到就右鍵maven project中的learn-persist，然後點擊generate sources…。

1.5 運行mybatis generator插件

如上圖，點擊運行mybatis generator:generator插件，會對應生成左側標紅的三個文件。

v編寫controller

2.0 添加result返回實體類

package learn.model.vo;    import java.io.Serializable;    /**   * @author toutou   * @date by 2019/07   */  public class Result<T> implements Serializable {        public int code;      public String message;      public T data;        public int getCode() {          return code;      }        public void setCode(int code) {          this.code = code;      }        public String getMessage() {          return message;      }        public void setMessage(String message) {          this.message = message;      }        public T getData() {          return data;      }        public void setData(T data) {          this.data = data;      }        public static <T> Result<T> setSuccessResult(T t){          Result<T> r = new Result<T>();          r.setCode(200);          r.setData(t);          r.setMessage("success");          return r;      }        public static <T> Result<T> setErrorResult(int tempCode, String messageTemp){          Result<T> r = new Result<T>();          r.setCode(tempCode);          r.setMessage(messageTemp);          return r;      }  }

2.1 添加controller

package learn.web.controller;    import learn.model.vo.Result;  import learn.model.vo.UserAccountVO;  import learn.service.*;  import org.springframework.beans.factory.annotation.Autowired;  import org.springframework.web.bind.annotation.GetMapping;  import org.springframework.web.bind.annotation.RequestParam;  import org.springframework.web.bind.annotation.RestController;    /**   * @author toutou   * @date by 2019/07   */  @RestController  public class UserController {        @Autowired      UserAccountService userAccountService;        @GetMapping("/user/hello")      public String helloWorld() {          return "hello world.";      }        @GetMapping("/user/getuser")      public Result getUserAccountById(@RequestParam("uid") int id){          UserAccountVO user = userAccountService.getUserAccountById(id);          if(user != null){              return Result.setSuccessResult(user);          }else{              return Result.setErrorResult(404, "用戶不存在");          }      }  }

注意：getUserAccountById暫時用不上，可以先不添加。

2.2 添加aplication啟動類

package learn.web;    import org.mybatis.spring.annotation.MapperScan;  import org.springframework.boot.SpringApplication;  import org.springframework.boot.autoconfigure.SpringBootApplication;  import org.springframework.context.annotation.ComponentScan;    /**   * Created by toutou on 2019/7   */  @SpringBootApplication  @ComponentScan(basePackages = {"learn.*" })  @MapperScan(basePackages = {"learn.persist"})  public class Application {        public static void main(String[] args) {          SpringApplication.run(Application.class, args);      }    }

2.3 添加aplication.properties

server.port=8300  spring.profiles.active=@env@    #mybatis  mybatis.mapper-locations = classpath:mapper/*Mapper.xml

2.4 配置啟動類

2.5 測試效果

v編寫service

3.1 添加Service

package learn.service;    import learn.model.vo.UserAccountVO;    /**   * @author toutou   * @date by 2019/07   */  public interface UserAccountService {      UserAccountVO getUserAccountById(Integer id);  }

3.2 實現Service

package learn.service.impl;    import learn.model.po.UserAccount;  import learn.model.vo.UserAccountVO;  import learn.persist.UserAccountMapper;  import learn.service.UserAccountService;  import org.springframework.beans.factory.annotation.Autowired;  import org.springframework.stereotype.Service;    /**   * @author toutou   * @date by 2019/07   */  @Service  public class UserAccountServiceImpl implements UserAccountService{      @Autowired      UserAccountMapper userMapper;        public UserAccountVO getUserAccountById(Integer id){          UserAccountVO accountVO = null;          UserAccount account = userMapper.selectByPrimaryKey(id);          if (account != null) {              accountVO = new UserAccountVO();              accountVO.setId(account.getId());              accountVO.setAccount(account.getAccount());              accountVO.setAge(account.getAge());              accountVO.setEmail(account.getEmail());              accountVO.setUsername(account.getUsername());              accountVO.setPhone(account.getPhone());          }            return accountVO;      }  }

v配置設置

4.1 添加application.properties

4.2 添加application.dev.properties

spring.datasource.url=jdbc:mysql://localhost:3306/mytest?useSSL=false&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&serverTimezone=GMT%2b8  spring.datasource.username=toutou  spring.datasource.password=demo123456  spring.datasource.driver-class-name=com.mysql.jdbc.Driver

4.3 添加pom.xml配置

4.3.1 hellolearn pom.xml

4.3.2 learn-web pom.xml

    <build>          <filters>              <filter>src/main/resources/config/application-${env}.properties</filter>          </filters>      </build>

4.4 更新application啟動類

4.5 測試效果

vlinux部署springboot

5.1 learn-web pom.xml中添加插件

    <build>          <filters>              <filter>src/main/resources/config/application-${env}.properties</filter>          </filters>          <plugins>              <plugin>                  <groupId>org.springframework.boot</groupId>                  <artifactId>spring-boot-maven-plugin</artifactId>                  <configuration>                      <mainClass>learn.web.Application</mainClass>                      <classifier>exec</classifier>                  </configuration>                  <executions>                      <execution>                          <goals>                              <goal>repackage</goal>                          </goals>                      </execution>                  </executions>              </plugin>          </plugins>      </build>

5.2 hellolearn pom.xml中添加插件

    <build>          <plugins>              <plugin>                  <groupId>org.apache.maven.plugins</groupId>                  <artifactId>maven-jar-plugin</artifactId>                  <version>3.0.2</version>                  <configuration>                      <excludes>                          <exclude>**/profiles/</exclude>                          <exclude>**/mybatis-generator/</exclude>                      </excludes>                  </configuration>              </plugin>              <plugin>                  <groupId>org.apache.maven.plugins</groupId>                  <artifactId>maven-compiler-plugin</artifactId>                  <configuration>                      <source>1.8</source>                      <target>1.8</target>                  </configuration>              </plugin>          </plugins>      </build>

注意：如果有用到profiles文件目錄則exclude。

5.3 打包部署

java -jar learn-web-0.0.1-SNAPSHOT-exec.jar --server.port=95

你可能會遇到的問題：

v源碼地址

https://github.com/toutouge/javademosecond/tree/master/hellolearn

作　　者：請叫我頭頭哥
出　　處：http://www.cnblogs.com/toutou/
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